US4320212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ternary polycarbonate compositions containing polyacrylate and thermoplastic polyester
Assignee: General Electric Co
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Filing: 1980-03-20
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Granted: 1982-03-16
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Expires: 2000-03-20
Abstract
Abstract Ternary compositions are disclosed which comprise a mixture of a high molecular weight thermoplastic, aromatic polycarbonate, an acrylate copolymer, and thermoplastic polyester.
Inventors
- 👤 Ping Y. Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:37
CPC Classifications
C; C08; C08L; C08L69/00; C08L69/005
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
50 words
A ternary polycarbonate composition comprising in admixture, a major amount of a high molecular weight aromatic polycarbonate, a minor amount of an acrylate copolymer which is a copolymer of a C 1 -C 5 acrylate and a C 1 -C 5 methacrylate, and a minor amount of a thermoplastic polyester.
Claim 2
Dependent Claim
50 words
A ternary polycarbonate composition comprising in admixture, a major amount of a high molecular weight aromatic polycarbonate, a minor amount of an acrylate copolymer which is a copolymer of a C 1 -C 5 acrylate and a C 1 -C 5 methacrylate, and a minor amount of a thermoplastic polyester.
Claim 3
Dependent Claim
26 words
The composition of claim 1 wherein said acrylate copolymer is present in an amount of about 2-4.25 parts by weight per hundred parts of aromatic polycarbonate.
Claim 4
Dependent Claim
26 words
The composition of claim 1 wherein said thermoplastic polyester is present in an amount of about 0.5-2.5 parts by weight per hundred parts of aromatic polycarbonate.
Claim 5
Dependent Claim
26 words
The composition of claim 3 wherein said thermoplastic polyester is present in an amount of about 1.0-2.0 parts by weight per hundred parts of aromatic polycarbonate.
Claim 6
Dependent Claim
60 words
The composition of claim 1 wherein the acrylate portion of said acrylate copolymer is selected from the group consisting of ethyl acrylate, n-butyl acrylate, 1,3-butylene diacrylate, isobutyl acrylate, 1,4-butanediol diacrylate and methyl acrylate and the methacrylate portion of said acrylate copolymer is selected from the group consisting of methyl methacrylate, 1,3 butylene dimethacrylate, isobutyl methacrylate, butyl methacrylate and ethyl methacrylate.
Claim 7
Dependent Claim
13 words
The composition of claim 5 wherein the aromatic polycarbonate is derived from 2,2-bis(4-hydroxyphenyl)propane.
Claim 8
Dependent Claim
21 words
The composition of claim 5 wherein the weight ratio of acrylate: methacrylate in said acrylate copolymer ranges from about 15-50: 50-85.
Claim 9
Dependent Claim
29 words
The composition of claim 1 wherein said thermoplastic polyester is a member selected from the group consisting of poly (1,4-butylene terephthalate), poly(ethylene terephthalate), cyclohexylene dimethanol copolymer, and mixtures thereof.
Claim 10
Dependent Claim
136 words
A ternary polycarbonate composition comprising an admixture of a high molecular weight aromatic polycarbonate; an acrylate copolymer in an amount of about 2-4.25 parts by weight per hundred parts of said aromatic polycarbonate, said acrylate copolymer being a copolymer of a C 1 -C 5 acrylate and a C 1 -C 5 methacrylate, said acrylate being a member selected from the group consisting of methyl acrylate, ethyl acrylate, n-butyl acrylate, 1,3-butylene diacrylate, isobutyl acrylate, and 1,4-butanediol diacrylate, and said methacrylate being a member selected from the group consisting of methyl methacrylate, ethyl methacrylate, butyl methacrylate, isobutyl methacrylate, and 1,3-butylene dimethacrylate; and, a thermoplastic polyester in an amount of about 0.5-2.5 parts by weight per hundred parts of said aromatic polycarbonate and selected from the group consisting of poly(1,4-butylene terephthalate), poly(ethylene terephthalate), cyclohexylenedimethanol copolymer, and mixtures thereof.
Claim 11
Dependent Claim
136 words
A ternary polycarbonate composition comprising an admixture of a high molecular weight aromatic polycarbonate; an acrylate copolymer in an amount of about 2-4.25 parts by weight per hundred parts of said aromatic polycarbonate, said acrylate copolymer being a copolymer of a C 1 -C 5 acrylate and a C 1 -C 5 methacrylate, said acrylate being a member selected from the group consisting of methyl acrylate, ethyl acrylate, n-butyl acrylate, 1,3-butylene diacrylate, isobutyl acrylate, and 1,4-butanediol diacrylate, and said methacrylate being a member selected from the group consisting of methyl methacrylate, ethyl methacrylate, butyl methacrylate, isobutyl methacrylate, and 1,3-butylene dimethacrylate; and, a thermoplastic polyester in an amount of about 0.5-2.5 parts by weight per hundred parts of said aromatic polycarbonate and selected from the group consisting of poly(1,4-butylene terephthalate), poly(ethylene terephthalate), cyclohexylenedimethanol copolymer, and mixtures thereof.
Claim 12
Dependent Claim
14 words
The composition of claim 9 wherein said aromatic polycarbonate is derived from 2,2-bis(4-hydroxy phenyl)propane.
Claim 13
Dependent Claim
27 words
The composition of claim 9 wherein said thermoplastic polyester is present in an amount of about 1.0-2.0 parts by weight per hundred parts of said aromatic polycarbonate.
Claim 14
Dependent Claim
21 words
The composition of claim 9 wherein the weight ratio of acrylate: methacrylate in said acrylate copolymer ranges from about 15-50: 50-85.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-15 | 1985-09-14 | 1986-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-15 | 1989-09-14 | 1990-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-15 | 1993-09-14 | 1994-03-16 | $7700.00 | Window Closed / Lapsed |